Beginning as a 1986 science fiction/horror novel, Megami Tensei has since grown to become one of the most expansive Japanese RPG series of all time, comprising of over thirty titles in variety of subgenres. As the original “monster collecting” game, the heroes converse with hundreds of demons across various world mythologies and convince them to join their cause. While early entries focused on exploring post-apocalyptic Tokyo, the series has branched out in several different directions, putting you in the role of demon-hunting detectives and high school students, across other spinoffs like Devil Summoner, Persona, and Devil Survivor. This book catalogues all of them and untangles the web of the this complicated but fascinating series, reviewing many Japanese-only entries as well as other incredibly obscure titles within the series.